<form  action="<?php echo Yii::app()->createUrl("/item/index")?>" method="get"><div class="search"><input type="text" name="keyword" value="品名或商品号" class="search_input" onblur="if(this.value=='') this.value='品名或商品号';"onfocus="if(this.value=='品名或商品号') this.value='';"/><input type="submit" class="search_submit" value="搜索"/></div>                        </form>